Melt Chocolate: Combine chocolate chips and half the heavy cream in a microwave-safe bowl. Heat in 30-second intervals, stirring until smooth. Let cool.
Add Flavor: Stir in sifted confectioners' sugar and vanilla extract.
Whip Cream: In a separate bowl, whip the remaining cream until soft peaks form.
Fold & Blend: Gradually beat the cooled chocolate mixture into the whipped cream in thirds.
Assemble & Chill: Spoon the chocolate filling into the prepared pie crust. Refrigerate for at least 8 hours until set.
Serve & Enjoy: Slice and top with extra whipped cream if desired.